What is the total combined USB output if all plugs are used at once?

USB Power Block Output. Cory “Oak” Andrews I have a power block that has a total of 4 USB ports. Three of them are 5v 2.4 amp and one is 5v 3.0amp. What is the total combined output if all USB ports are used at once? To calculate the total combined output of all the USB ports, you need to add up the output of each port. The output of the three 5V 2.4A ports is: 3 x 2.4 = 7.2A The output of the 5V 3.0A port is: 1 x 3.0A = 3.0A So the total combined output of all the USB ports is: 7.2A + 3.0A = 10.2A Therefore, the total combined output of all the USB ports is 10.2A.

What is the maximum output when all usb ports (including all usb-a and usb-c) are plugged in?

Hi Dear Customer, This flat plug power strip maximum output when all usb ports are plugged in: 5V/3.4A/17W. If there is anything we can do for you, please don't hesitate to contact us via official email: support@etrond.com Have a nice day! Yours truly Bruce-TROND Customer Care

Is this available in black?

Hi Dear Customer, Thanks for your attention. Yes, The black version of this ultra flat plug power strip is still being prepared. If you are interested in it, please kindly wait for it! And if you have any other problems, please always feel free to contact us at support@etrond.com. Best Regards, Bruce-TROND Customer Care

will it work internationally ( 100 - 240 ) volts or just morth / central america 125 v?

It states quite plainly in the description: "Power Rating 1250W (125V/10A)." It never mentions that it has dual voltage to work internationally.

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Reviews

C**.

absolutely love this

I absolutely love this TROND Travel Flat Plug Power Strip! The design is slim, lightweight, and perfect for travel—it easily fits in my suitcase without taking up much space. The flat plug and 5ft cord make it super convenient to use in tight spots, especially behind furniture!. I also appreciate the multiple outlets and USB ports, which let me charge all my devices at once without needing a bunch of adapters. It’s cruise-ship friendly and has already become one of my must-have travel essentials. Reliable, compact, and thoughtfully designed—highly recommend! I loved it so much that I ended up buying 2 more.

5.09.2025

E**E

Compact, Reliable, and Convenient

I tried two other types before this and returned both. This power strip is perfect. The long cord makes it easy to use anywhere, the outlets and USB ports are well placed, and the design is compact. I was so impressed I ordered two more.

22.09.2025

L**H

Works great

Exactly what I needed and wanted. It plugs into the wall flat, and has USB ports that I needed to hook up my grow lights for my plants. It works great and is exactly as described.

1.02.2026

A**R

Great lightweight flat plug power strip for cruising. Got 1 with a 25' extension cord. Awesome!

Just what we needed to go on a cruise. Has many outlets including class C usb ports. And most important for the cruiseline... no surge suppressor - a rule onboard. Price was great and arrived next day. Outstanding job Amazon

13.11.2025

K**E

Slim Power Solution for Travelers

This power strip is a sleek and practical choice for those on the go. With 4 AC outlets, 3 USB A ports, and 1 USB C port packed into its slim design, it can power up to 8 devices simultaneously. The USB charging station features smart technology for efficient charging. Its flat plug and thin extension cord make it perfect for tight spaces and travel needs. Just beware of cruise line restrictions on extension cords and there is no surge protection!

18.03.2024

L**R

Sufficient product.

Satisfactory product. Functional.

28.12.2025

F**Y

Compact, several outlets

It was smaller than i thought, yet has several outlets. Perfect to take in my bag for travel!

9.02.2026

B**K

Small, plenty of power in usb ports

It's small enough to put in a suitcase, takes up very little space. Has enough plugs and the usb ports put out plenty of power. The flat plug is nice to get behind furniture. The white lower light lets you know it has power, but isn't bright enough to be a problem in a dark room. Haven't tried to get it on a cruise ship yet.

14.10.2025

ASIN	B0B497LDDW
Amperage	10 Amps
Best Sellers Rank	#3,079 in Electronics ( See Top 100 in Electronics ) #211 in Power Strips
Brand	TROND
Color	White
Compatible Devices	Camera, DVD Player, Smartphone, Tablet, Television
Customer Reviews	4.7 out of 5 stars 2,887 Reviews
Enclosure Material	UL94 V-0 Flame-Retardant PC+ABS
Item Dimensions L x W	3.94"L x 1.89"W
Item Weight	204 Grams
Manufacturer	TROND
Maximum Current	10 Amps
Number of Outlets	4
Number of Ports	8
Other Special Features of the Product	Lightweight, Mountable, Surge Protection, Usb Slot, Wide Spaced Outlet
Plug Type	Type B
Power Plug Type	Type B - 3 pin (North American)
Product Dimensions	3.94"L x 1.89"W
Recommended Uses For Product	Bedroom, Dorm room, Garage, Guest room, Home, Hotel, Indoor, Kitchen, Living room, Office, Travel
Shape	Rectangle
Special Feature	Lightweight, Mountable, Surge Protection, Usb Slot, Wide Spaced Outlet
Surge Protection Rating	900 Joules
Total Power Outlets	4
Total Usb Ports	4
UPC	728120949213
Voltage	125.0
Warranty Description	18-Month Product Warranty & 30-Day Money Back Guarantee

TROND Flat Plug Power Strip 5FT, Small Flat Extension Cord with Multiple Outlets, 4 AC and 4 USB Ports (2 USB C), Wall Mount 900J Surge Protector for Home Office Travel Dorm Room Essentials, White

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